diff options
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index a6a66d794763..944e44caa260 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1781,11 +1781,21 @@ static void ahci_update_initial_lpm_policy(struct ata_port *ap) return; } + /* If no Partial or no Slumber, we cannot support DIPM. */ + if ((ap->host->flags & ATA_HOST_NO_PART) || + (ap->host->flags & ATA_HOST_NO_SSC)) { + ata_port_dbg(ap, "Host does not support DIPM\n"); + ap->flags |= ATA_FLAG_NO_DIPM; + } + /* If no LPM states are supported by the HBA, do not bother with LPM */ if ((ap->host->flags & ATA_HOST_NO_PART) && (ap->host->flags & ATA_HOST_NO_SSC) && (ap->host->flags & ATA_HOST_NO_DEVSLP)) { - ata_port_dbg(ap, "no LPM states supported, not enabling LPM\n"); + ata_port_dbg(ap, + "No LPM states supported, forcing LPM max_power\n"); + ap->flags |= ATA_FLAG_NO_LPM; + ap->target_lpm_policy = ATA_LPM_MAX_POWER; return; } |